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Alexei V Efimov

Alfred A Berlin

Tamara Y Kefeli

Boris I Kolomazov

Nina V Varlamova

Judif M Altshuler

Grigory M Strongin

Jury A Avdonin

Vladimir M Kotlyarsky

Igor I Konstantinov

Albert A Kim

Nikolai V Obraztsov

Antonina I Kormushechkina

The present invention relates to chemical processes for purification of industrial waste waters from aromatic amines. The process of the invention is characterized in that into waste waters aromatic di- or polyisocyanates are introduced in a molar ratio with aromatic amines ranging from 1:1 to 30:1 respectively. The resulting precipitate is separated from the purified waste waters. The aromatic isocyanates can be introduced into waste waters as solutions in inert organic solvents. The process of this invention can be useful in processes for the production of aromatic amines and derivatives thereof, for example aromatic isocyanates.

Process for purification of waste waters from aromatic amines

A method for preparing olegourethanacrylates having the general formula ##STR1## where ##STR2## is a radical of a telogen; X is H, CH.sub.3 or a halide;

Reticulate polymers based on oligourethanacrylates and method for their

A method for preparing oligourethanacrylates having the general formula ##STR1## where ##STR2## is a radical of a telogen; X is H, CH.sub.3 or a halide;

Oligourethanacrylates and methods for their manufacture

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Dzerzhinsk Gorkovskoi oblasti, undefined

Alexei V Efimov